im not really on a time frame....i have a 91 chevy caprice....i have a 305 in it now, wanting to put the 350 in it.....we tested it, runs exceptionally well, oil pressure is at 70lb at idle, no leaks.....has a edelbrock performer intake, my caprice is tbi, getting a throttle body adapter plate, not sure if i should use the stock tbi (might restrict the fuel for the 350)....i dont want headers but i have duals already on it....getting a posi rearend....i am using this as a daily driver.....not worried about the gas price, just want it to be worth my while and i want the 350 to make people jealous or in a way just impressed that it runs really well